For illustration purposes the cheaper Delta fixtures most investors purchase at Home Depot or Lowes aren't sold at plumbing supply stores because Delta licenses these less expensive options exclusively to the big box stores (same is true for other manufacturers as well).

Im a licensed agent here in Pittsburgh.

In AK, I have my real estate license, I also got my WI license in advance to self-represent and secure a property before I relocate.

Depending on the # of licenses, Costar might range from $300-$450/month per user.  

I am from North Idaho, and have been a licensed Real Estate agent for a year now.

Having earned my degrees along the way and holding several professional certifications and licenses, I’m always looking for new ways to grow and challenge myself. 

I've had my license for a few months now and will soon be closing on my first listing.

I have a neighbor across the street who is licensed and does general construction and fine carpentry and another neighbor from a different place who is an architect (not sure if licensed or not).

It's best to get licensed so you will have a competent broker, a second set of eyes on the transaction who will help keep you out of trouble. 

I believe it is just common courtesy on top of me spending money to send out the letters.